Save web page to PDF with selenium and PhantomJS.

render.js

// npm install selenium-webdriver phantomjs-prebuilt --save

const webdriver = require('selenium-webdriver')

async function render(driver, filename) {
  return await driver.executePhantomJS(`this.render("${filename}")`);
}

const main = async () => {
  const customPhantom = webdriver.Capabilities.phantomjs();

  const driver = new webdriver.Builder()
    .withCapabilities(customPhantom)
    .build()
  await driver.manage().window().setSize(1200, 300);

  await driver.get('https://github.com')

  await render(driver, './page.pdf');

  driver.quit();
};

(async () => {
  await main();
})();